Everything You Know About The ZHP

[Marcus-SanDiego]

Actually, the weight difference is minimal:

2003 330i ZHP: 3370 lb
2006 330i: 3417 lb

Only a 47 lb difference

Gear ratios?

[badzhp]

+1 on gear ratios. pretty sure the 06 E90 330i did not come with the 364 ratio's.

[3ZHPGUY]

Moar good data....

ZHP:
0-60 in 5.6 sec
235 hp
222 lb/ft torque

The E90
0-60 in 6.1 sec
255 hp
220 lb/ft torque

The ZHP 0-60 time was quoted from this Car & Driver road test. http://www.caranddriver.com/reviews/...kage-road_test. They also Quote a 14.3 1/4 mile but, the best I could ever get with mine stock was a 15.133 and they quote the 330I without at 14.8. So I don't know how true this is!

[mimalmo]

Actually, that article shows a 14.3 quarter mile time.

[Washburn]

Sometime in mid-2005, the steering wheel changed to a leather perforated one, replacing the alcantara wheel.

[Marcus-SanDiego]

Yes. I believe it was August of 2005. Though do not hold me to that.

[zhp43867]

[B][U]
Quicker steering rack ratio. 13.7:1 versus 15.4:1
All post 4/01 330's use the same part number steering rack. The ratio of this rack has not been confirmed, but it is believed to be different from that used on the 325's

I am not attempting to get into the detail of purported ZHP rack's existence or other in this thread, just reporting on the install

After doing all my research, I believe I was able to isolate the mysterious ZHP rack part number - and then able to obtain a rack.

The quicker ratio steering over the 325 stock rack is immediately noticeable.
This was a simple and relatively cheap mod.:

http://forum.e46fanatics.com/showthr...+steering+rack

I came across an interesting factoid while doing this research - all photos of racks on actual ZHPs, depict an identical (differing manufacture dates) yellow tag, listing ZF part number. Again, perhaps coincidental, but I have come across 5 actual photos (enclosed) and they all have the same tag. Further, the production dates of these 5 racks range from 10/03 to 05/05, so appears there may have been some consistency using this specific rack across the years. I have also seen standard 330i tags and they have different ZF numbers.

http://forum.e46fanatics.com/showthr...+steering+rack

Actually, the weight difference is minimal:

2003 330i ZHP: 3370 lb
2006 330i: 3417 lb

Only a 47 lb difference

I found 3255 and 3287 for the E46 330...

Sometime in mid-2005, the steering wheel changed to a leather perforated one, replacing the alcantara wheel.

Was this after the end of sedan production? I've never seen a zhp sedan with a perforated wheel.

[Washburn]

Not sure about the sedan steering wheel...i have the leather on my 2005 coupe (luckily)

[kayger12]

Same here with an August '05 build.

[rikdee]

I really like my Alcantara steering wheel. A little TLC and I'm good to go; plus, its a perfect application for driving gloves. I don't have a single car-crazy friend whose ride has such a feature. Leather wheel - nein danke. Alcantara is one of the many charactaristics that makes my Z a stand-out...